The Battle of Dayr al-‘Aqul (Arabic: دير العقول, Persian: دیرالعقول) was fought on April 8, 876 between forces of the Saffarid amir Ya'qub ibn Laith and the Abbasid Caliphate. Taking place some 80 km southeast (downstream) of Baghdad, the battle ended in a decisive victory for the Abbasids, forcing Ya`qub to halt his advance into Iraq.